ASTROSAT CZTI

Data Quality Report

Orbit 21814

Creation date: 2024-06-27T18:32:34.092837
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_004T01_9000003230_21814cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21814cztM0_level2_quad_clean.evt
Size (bytes)431,049,60083,782,080
Size411.1 MB 79.9 MB
Events in quadrant A3,070,147530,943
Events in quadrant B3,284,605547,816
Events in quadrant C3,105,994526,105
Events in quadrant D3,175,216502,488

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128272
B0134092
C0128312
D0134402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6154200.324992%
B6153420.682594%
C6153490.796359%
D6153280.455063%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7464 6155 0 0 0.00% 0.00%
B 7463 6154 10 10 0.13% 0.16%
C 7463 6154 0 0 0.00% 0.00%
D 7463 6154 20 20 0.27% 0.32%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 252 16146 96.49 792 778 159.3
A 13 254 11737 68.81 792 778 159.3
A 0 226 7055 39.41 792 778 159.3
B 3 64 67671 445.84 799 780 150.0
B 0 190 26907 174.14 799 780 150.0
B 12 111 17147 109.09 799 780 150.0
C 14 238 122733 692.03 763 769 176.2
C 0 10 6437 32.16 763 769 176.2
C 13 61 5362 26.06 763 769 176.2
D 1 52 118373 636.75 762 741 184.7
D 13 153 82436 442.22 762 741 184.7
D 13 104 32495 171.89 762 741 184.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter